#include <stdio.h>
#include <unistd.h>

int sum(int a, int b)
{
    return a+b;
}

int main()
{
    while(1)
    {
        printf("I am a process, pid=%d\n", getpid());
        sleep(1);
    }
    
    //int a = 1;
    //int b = 2;
    //int c = sum(a, b);
    //printf("%d\n", c);

    return 0;
}
